Igeo

Igeo classes

Pollution intensity

<0

0

Unpolluted

0 - 1

1

Unpolluted to moderately polluted

1 - 2

2

Moderately polluted

2 - 3

3

Moderately to strongly polluted

3 - 4

4

Strongly polluted

4 - 5

5

Strongly to very strongly polluted

>5

6

Very strongly polluted